Glass-stowwa tool



Pziltented June 17, 1919.

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eLAss-srowme rooL.

- Specification of Letters latent Patented June 17, 1919.

Application filed June 21, 1918. Serial No. 241,278.

To all whomjit may concern:

Be it known that 1, JOHN A. BEGHTEL, a

citizenfof'the United States, residing at Tarentum, in, the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Glass-Sft owing Tools, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which-- Figure 1 is a sectional diagrammatic plan view illustrating the use of my invention.

Fig. 2 isa plan View, partly broken away, of the blade of the tool. I

Fig. 3 is a side view of the same.

Figs. 4 and 5 are sectional views taken on the lines IV-JV and V--V, respectively, of Fig. 2, and

Fig. 6 is a lan view of a portionof one of dies. v

My invention has relation to tools of the class which are employed for pushing sheets or plates of glass through leer annealing ovens and commonly known as glass stowing tools.

The object of myinvention is to provide a tool of this character having its blade or portion which comes in contact with the glass of greater length than the linear diameter of that edge of the glass plate or sheet with which the tool contacts, whereby cer-' tain important advantages hereinafter stated are obtained. I

A further object of my invention is to providea tool'of this cha-raoter which can be readily reversed in operation so as to prevent warpmg.

My invention also provides a stowing tool which results in less injury to the glass and which is simple in its construction and mode of operation.

' The nature of my invention will be best understood by reference to the accompanypre-- ing drawing in which I have shown a ferred embodiment thereof, and Which will now be described, it being premised, however, that various changes can be made in the details of'constructionand arrangementv of the parts of the tool, without departing.

from-the spirit'an'd scope of-my invention, as defined in the appendedclaims.

In the preferred form of my invention, I construct the blade of the tool of a central longitudinallyextending I-bcam2, to the opposite flanges of which arerigidly secured the channels 3 having their fiat surfaces outermost. The length of the I-beams and of the channels is greater than the width of the largest plate or sheet with which the tool is to be used where front stowsare made; and longer than the' length of the; longest plate or sheet where the tool is used for side stowing. I

The tool is provided with one, or 'more handles 4, which are detachably engaged with the blade portion. The connection between the handles and the blades may be conveniently made by providing the pins or studs 5 which project inwardly intothe interior of the blade and'each ofw'vhich is designed to be engaged by an opening 6 in the end of the'handlc 4-. This end portion of the handle is providedwith a heel 7 adapted to engage'the edge of the I-beam flange in the manner shown in Fig. 4:, and. thus prevent strains on the channel irons.

I'preferably provide four sets of these pins arranged as shown in Fig. 4, which permits the handles'to be readily engaged with the blade portion when the latter is reversed either end for end or turned upon either of its channel iron surfaces. The end portions of the handles {are bent upwardly. near where they engage with the pinions or studs 5, so as to extend outwardly through the openings between the side flanges of the channel irons and out of contact with the oven bottoms.

The manner of using the tool will 'be clearly apparent from Fig. 1 in whichboth side and end stowing are illustrated. Thetool is placed against the edge of the sheet and is pushed by means of the handles to I move'the sheet or plate 3 in the oven. The advantages of my invention will be apparent to those familiar with the use of tools of this .class. The stowing' tools commonly in use at the present time have blades with a single working surface which is shorter than the plates, being stowed. The continued use of these tools on the oven bottoms cause grooves to be worn in such bot- I "toms; and as the glass sheets or plates are plastic when pushed through the ovens, they take the form of the oven bottoms, and when such bottoms: are grooved, the plates have irregular top and bottom surfaces. means that a longer time is required for the subsequent grinding operations and fre-.

quently bad spots are left in the plate which" necessitates cutting the-finished product, and reduces the plate to smaller sizes. By the This f wall for moving the tool, whereby grooving use of my improved tool, which has a continuous bearing on the oven bottom for a length greater than the length or width of the sheet, this grooving of the oven bottom is entirely obviated and they are kept smooth and level.

With the tools now in use it also frequentlyoccurs that the sand used in the ovens to prevent plates sticking to the bottoms collects in bunches or piles which cause bulges in the plates, resulting in irregular leers must be stopped at intervals. and the fires put out in order that the oven bottoms may be redressed to remove stowing tool grooves. This is obviated by my invention.

By reason of the reversibility of the tool both end for end and also to bring either side into*c'ontact with the oven bottom,

"warping and misshaping of the channel irons from the heat vented.

I clairnt- 1. The combination with a glass leer chamber, of a glass-stowing tool movable therein having a blade-of substantially the full width of the chamber with allowance for slight end movementof the blade, and a handle projecting through the chamber of the floor within the lateral dimensions of the glass plates or sheets is avoided, substantially as described.

2. A glass-stowing tool having a blade provided with upper and lower surfaces, each adapted for contact with'the oven bot,- tom, and means whereby a handle may be connected to said blade in either one of two reversed positions, substantially as described.

3. A glass-stowing tool having its blade provided with upper and lower surfaces, each adapted to contact with the oven bottom, and means whereby ahandle may be of the ovens is pre scribed.

.a different position of the connected said blade ineitlier position ofv the "latter when turned edge for edge and also in either position'ther'eof when turned end for end, substantially as described.

' 4. A glass-stowing-tool comprising a blade which. is reversible edge for edge and also end for end, a"detachable handle, and means for attaching said handle to the blade in allof thefreversed positions of'the latter,"

substantially as described.

5. A glass-stow1ng-tool having a blade portion of greater length than the liner ,di-

mension of that edge'oftheplate orsheet with which'the tool contacts in use, and ahandle member adapted for detachable engagement with the blade portion, the blade.

portion being provided with a pluralitvof devices whereby a handle-may be en aged. j

therewith in reversed positions ofthe lade portion.

6. Aglass-stowing tool having its blade I portion comprising a central I-beam member, and channel irons secured to the flanges of the I-beam; substantially as described.

. 7. A glass-stow-ing tool having its bladeportion comprising a central I-beam mem her, and channel irons secured to the flar-g'es of the I-beam, together with a handle vhaving means foritsengagement and disengagement from the blade portionfl through the openings between theflanges of said channel irons; substantially as described.

8. A glass-stowing tool comprising a central beam member and channels secured to opposite edges of the'beam member,'and a detachable handle; substantially as us,-

9. A glass-stowing tool, I comprisinga blade reversible end for end and also edge for edge and having four different handleattaching means, each designed for use in tially as described.

10. The combination with a leer chamber,

of a glass-stowing tool therein having a blade of substantially the full width of the chamber with allowance for slight end movement of the blade, and detachable handle projecting from the said tool through the wall of the chamber, said tool being ar-' ranged to receive the handle in difl'erent parts of thetool, substantially as described. In testimony whereof, I have hereunto set my hand.

JOHN BECHTEL.

blade, substan- 

